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685631

Sigma-Aldrich

Diiodo(bis(diphenylphosphino)ethane)cobalt(II)

Synonym(s):

[1,2-Ethanediylbis[diphenylphosphine-Κ, P]]diiodo-cobalt

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About This Item

Linear Formula:
CoI2(P(C6H5)2C2H4P(C6H5)2)
CAS Number:
34775-39-8
Molecular Weight:
711.16
MDL number:
MFCD11045354
UNSPSC Code:
12352300
PubChem Substance ID:
329760987
NACRES:
NA.22

form

powder

reaction suitability

core: cobalt
reagent type: catalyst

mp

>300 °C

SMILES string

I[Co]I.C(CP(c1ccccc1)c2ccccc2)P(c3ccccc3)c4ccccc4

InChI

1S/C26H24P2.Co.2HI/c1-5-13-23(14-6-1)27(24-15-7-2-8-16-24)21-22-28(25-17-9-3-10-18-25)26-19-11-4-12-20-26;;;/h1-20H,21-22H2;;2*1H/q;+2;;/p-2

InChI key

FLTZQBPRANWICZ-UHFFFAOYSA-L

Application

Catalyst for:
  • Reductive coupling reactions
  • Cyclization reactions
  • Reductive [3 + 2] cycloaddition reactions
  • Aryl-sulfur bond formation
  • Dimerization reactions
Catalyst for the mild coupling of thiols with aryl and heteroaryl iodides to give sulfides.
Catalyzes the cyclization of 2-iodobenzoates with aldehydes to give phthalides (isobenzofuranones).

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Hong-Tai Chang et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 13(15), 4356-4363 (2007-02-27)
Methyl 2-iodobenzoates 1 a-c undergo cyclization reactions with various aromatic aldehydes 2 a-m (RC6H4CHO: R=H 2 a, 4-CH3 2 b, 4-tBu 2 c, 4-OMe 2 d, 3-OMe 2 e, 4-Cl 2 f, 4-CF3 2 g, 4-CN 2 h, 4-Ph 2
Ying-Chieh Wong et al.
Organic letters, 8(24), 5613-5616 (2006-11-17)
A new cobalt-catalyzed coupling of aryl halides with thiophenols and alkanethiols is reported. A variety of aryl sulfides can be prepared in excellent yields under mild reaction conditions using 1-2 mol % of CoI2(dppe) and Zn. This new cobalt-catalyzed coupling

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